Huh, that reminds me of some online SciFi story I once found… the heroine had two extra brains, implanted in her breasts. But Bucky hasn’t shown signs of superhuman intelligence so I doubt that’s the reason for her ever-expanding cup-size.

As for how it always works in movies, the answer is simple. The script-writers already figured out those roles and the director tells people where to stand and who does that. So they need to figure it out. Also pretty sure this unofficially officially renders Alex, aka Defendress, the leader of the LOSRH’s since she’s the one coming up with the plan and telling everyone what to do. I hope Keith and BGG recover quickly ’cause they need to throw her a ‘welcome to the team’ party.